我国海上油田所产大多为易凝高粘的含蜡原油，油气水混输已成为较长距离海上油田集输管道主要的输送方式，原油乳状液是原油和水在混输管道中共存的状态之一。因此，含蜡原油乳状液触变性是原油—水混输管道流动安全保障研究的重要基础资料。本课题针对W/O型含蜡原油乳状液触变特性开展研究，揭示不同加载条件下W/O型含蜡原油乳状液触变性宏观流变特性规律及微观机理；基于结构动力学模型和分散体系相对粘度的构想，建立适合描述多种加载模式下W/O型含蜡原油乳状液触变特性的数学模型；探知含水率对W/O型含蜡原油乳状液触变特性的影响规律；在此基础上，结合宏观触变特性关联因素分析，建立基于少量实验数据准确预测任意含水率、多种剪切加载模型的W/O型含蜡原油乳状液触变特性预测方法。研究成果将为油水混输管道停输再启动压力预测提供重要基础资料，推动含蜡原油流变学研究的进展。

Most oils produced in the China’s offshore oilfields are the waxy crudes, which are of high pour point and viscosity. Nowadays, the mixed transportation of oil-gas-water has become a major way for long distance offshore pipelines. Crude oil emulsion is one of the statesinwhich crude oil and water coexist inmixed transportation pipeline. Therefore, the thixotropic of waxy crude oil emulsion is important basic material for the flow assurance research of oil-water mixed transportation.In this study, based on the needs of numerical simulation of the shutdown and restart of subsea pipelines,the thixotropic of the water-in-oil emulsion for waxy crude oilwas studied, which aims to reveal the macro-rheological laws and its micro-mechanismsunder different loading conditions. Then, based on the ideas of the structural dynamics model and the relative viscosity in dispersed system, a mathematical model was establishedto describe the thixotropic behaviorsatmultipleloading modes. Meanwhile, the influence rules of water cut on the thixotropic of the water-in-oil emulsion for waxy crude oil were discussed.On this basis, with the analysis of related factors of the macro-thixotropic, a forecasting method wasestablished, which could predict the thixotropic of the water-in-oil emulsion for waxy crude oil at any water cut and different loading modes by using only few experimental data. The research results will provide important basic information for the pressure prediction of the shutdown and restart of mixed transportation pipelines,and promote the advance of rheological study on waxy crude oil.